Portable crane



Nov. 19, 1929. D. c. STROMEYER 1,736,102

vPORTABLE G'RANE Nov. 19, 1929.

D. C. 4STROMEYER PORTABLE CRANE Filed Dec. 31, 1928 3 Sheets--Sheet 2 5 Sheets-Sheet D. sTRoML-:YER

PORTABLE CRANE Filed DGO. 5l

Nov. 19, v1929.

Patented Nov. 19, 1929 UNITED STATES rf. Ni' irricev- 7 murieron c. sTeoMn-Ynn, or sfr.Vv Louis, ivrssonni roe-TABLE' 'CRANE Application led December 31, 1928. SerialNo. 329,366.-

Thisinvention relates to portable cranes, the primary object of the invention being to provide a `porta-ble crane especially designed for farm use to facilitate the handling` andy 5 loading of heavy articles that usually require the services of sever-al men in the `han-V view which will appear as the description 2Q proceeds,the invention resides 1n the combination and arrangement of parts and in the de'- tails of Y construction hereinafter described. and claimed, it being understood that changes in the precise embodiment 'of the invention herein disclosed, may be made withinl the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings.

Figure 1 is an elevational view of a portable crane constructed in accordance with the invention. I

Figure 2 is a plan view thereof, a portion of the awning being cut away.

Figure 3 is a vertical sectional view through the crane.

Figure 4 is a sectional Viewv through Vthe main post and operating mechanism.

Figure 5 is a detail view partly in section showing the operating mechanism.

Figure 6 is' a detail view illustrating the pivoted shaftl section and pinion supported thereby.

Referring to the drawings in detail, the base includes a plurality of arms 5 formed preferably of pipe sections which have their inner ends positioned in sockets 6, forming a part of the hub 7.

At the free ends of the arms 5 are arranged supporting wheels 8 by means of which the Vcrane may be moved from place to place pro vidage. portable Structure. YThe'iaith-n1-l f cludes a substantially large socket member 9 disposed centrally'of the hub and is designed to receive the lower end of the'postlO which is hollow and. provided at its upper end with 53 a bearing 11.

e This bearing 11 is formed with a groove to accommodatev the' balls 12 that support the: upper section of the craneyin such a way asA to' permit the crane to rotate, should it be `des ired to turn the crane' arm in lifting an arf. ticle from one position and transferringit to another position at the, opposite side ofthe.

crane. I

The-post 1o is aangetast emmene with. Y

respect tothe base, by' means of theybraceV rods 13 that have their lower 'ends fitted in? the lsocket memberslthat aresecured tothe Y arms 5, while the upper ends ofthe rods 13 are. secured within `sockets of the collar '15,71% v vsecured tothe post 10 an appreciable distanceV above the base thereof. Formedn the postlOis an opening throughjwhich the pinion,` 16 operates, the Apinion, 16 meshing with the` teeth 17 formed at t-he lower end of the tele.- 75m scoping-section` 18 of the supporting post'of thecrane. l, i

' Pinion 16 is secured at the lower end ofthe shaft`19 which is mounted in hearings 20,

-the shaft-19being lheld against inorvementspl. longitudinally of the bearings, by means of the collars 21 thatengage the bearings, as clearly shown by Figure `5 of the drawings'.fl

At the upper-end of the shaft 19 is a pin-4 ion 22 that ispivotally connetd lt0 the shaft 8,511 19 so that it may swing from-the position` as shown by Figure 5 of the drawings, to a position out of contact with the ring'` gear 23 secured to one end ofthe drum24. A collar 25 slides Yon the shaft 19 and is adapted to 90 y move into engagement with Vthe hub of the pinion 22 to normallyhold vthe pinion 22 in` its active position. The'drum 221 is mountedv on the shaft 26 that has is ends mounted in bearings formed at the outer ends of arms28, 95 v there being provided a handle l29 for rotating the drum 2,4. Afpawl indicated: at y'27 moves over the ratchet 30 at one end of the l' drum 24.l A

1 Mounted. on the post 18 is a socketrnember 10?v Y l 4.0'Evt post 10.

31 into which the inner ends of the supporting arms 32 extend, the lower ends of the member 31 being formed with a circular groove to accommodate the balls 12 to allow .5 the socket member and arms 32 to rotate l freely. The reference character 34 designates a bearing member formed with a groove in its upper surface to accommodate the balls 35 to engage the head 36 formed at the upper end of the hollow post 37Vwhich extends into the post sections18.

' Bolts 38 extend through the bearing member and registering openings in the postY section 18 to secure the bearing member to theV post section 18. Secured to the outer ends of fthefarms 32 are collars 39 which are secured in `position by means of the bolts 40.

Hooks 41 .depend'from `the collars 40 and provide supports for the chairs42 should it 261 be desiredto convert the crane into a lawn seat.

' f Flanges 42Vextend upwardly from the col- Y lars=39 to which flanges rods 43 are connect-r 'ed, Atheopp'osite ends of the rods 43 being i ggconnect'edto the ring member 44 that is mounted on Vthehead r36. These rods 43 provide a support for the awning or cover 45 which is shown as stretched thereover.r

.The reference character 46 designates the 3'0'1 main crane arm which is also hollow and is connected withthe hollowvpost section 47 byV means of the elbow 48, thearm'46 being bracedby means ofthe angularly disposed shaft, arpinion on the pivoted end section to f mesh with thegear at one end of the power drum, a sleeve on the shaft adapted to slide over the pivoted end section to hold the pivoted end section in its active position, pulleys mounted within the tubular post and tubular member, a cable-operating over the pulleys, and extendingthrough the post and tubularmemb'er, one end of thefcable being wound o'n the power drum, and a lever on the power drum foroperating thev power drum.

In testimony that IA claim the-:foregoingl as my own, I have hereto aiiixed mysig-` nature.

s DiE'TRicHo. STROMEYER; 1

arm 49; Pulley`5'0 is mounted `at the free end Y of the arm 46 lwhile pulley 51 isy mounted ithin the elbow 48. y A pulley 52 is mounted at thebas'e ofthe post and extends through an opening formed in the post so that a portion of Operating over the pulleys is `a cable 53 that is wound on thedrum 24, the free end of the cable being'supplied with a hook 54 Vthat `the pulley 52 operates within the may vbe'hooked into `an articleto be lifted Y v``by the crane. The cable 53 may be passed throughthe pulley 55 that is carried by the collar 56, in amanner as shown in dotted lines in Figure 1` of the drawings, so that ay more direct pull may be had withthe device,

.663 should it bedesired t0 dm3 articles along theground surface, or move heavy articles l with thecrane.

Adjustable hooks such as'shown at 57 may be provided on the arms 32 sov thattarticles 55 may be hung on the arms 32, and in butchering hogs, it is obvious that these hooks may be conveniently used for supporting a hog after it has been killed, so that the butcher may readily butcher Vthe hog. co I claim: 1

extending upwardly from the base, a power drum at the upper end of the postand having a gear on one end thereof, said post having a lateral opening, a tubular member extending In a portable crane, a base, a tubular post Y lio 

